code: def test_ufunc_properties(self, func, nin, nout, identity):
      jnp_fun = jnp.frompyfunc(
          func, nin=nin, nout=nout, identity=identity
      )
      self.assertEqual(jnp_fun.identity, identity)
      self.assertEqual(jnp_fun.nin, nin)
      self.assertEqual(jnp_fun.nout, nout)
      self.assertEqual(jnp_fun.nargs, nin)
  
imports: from functools import partial
  from absl.testing import absltest
  import numpy
  import jax
  import jax.numpy
  from jax._src import test_util
  from jax._src.numpy.ufunc_api import get_if_single_primitive
  from jax import config
label_desc: Use image node_id 1 for calling the LaxNumpyUfuncTests obj's underlying member method code with example usage: obj.test_ufunc_properties(func, nin, nout, identity) without return types